US5951916AExpiredUtility
Solutions of buckminsterfullerene (C60 ) in n-ethyl-2-pyrrolidone (NEP)
Est. expirySep 8, 2018(expired)· nominal 20-yr term from priority
B82Y 40/00B82Y 30/00C07C 2604/00C01B 32/156
31
PatentIndex Score
2
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19
References
5
Claims
Abstract
A solution comprising a polar solvent and C 60 in which the solubility of C 60 is at least 2 mg/ml of solvent. The polar solvent has a low toxicity, high boiling point, high thermal and electrochemical stability, low viscosity, low freezing point, a high dielectric constant, and is relatively inexpensive. Preferably the polar solvent is N-ethyl-2-pyrrolidone.
Claims
exact text as granted — not AI-modifiedWhat is claimed:
1. A solution comprising: (a) a polar solvent and (b) C 60 wherein the solubility of C 60 in the polar solvent is at least 2 mg C 60 per ml of solvent.
2. The solution according to claim 1, wherein N-ethyl-2-pyrrolidone has a boiling point of at least 200° C.
3. The solution according to claim 1, wherein N-ethyl-2-pyrrolidone has a dielectric constant of at least 28.2.
4. The solution according to claim 1, wherein N-ethyl-2-pyrrolidone has a viscosity below 10 cps.
5. The solution according to claim 1 wherein the solubility of C 60 in said N-ethyl-2-pyrrolidone is at least 5 mg C 60 per ml of solvent.Cited by (0)
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